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17 terms

Planet Earth (Chapter 2)

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Solar Energy
Energy from the sun
Rotation
One complete spin of Earth on it's axis. Takes 24 hours to complete, causes day and night.
Revolution
The Earth's trip around the sun, takes 365 1/4 days to complete.
Latitude
The distance north and south of the equator.
Tropics
Regions near the equator where season are based on rainfall not temperatures.
Freshwater
Water with out salt.
Glaciers
Large areas of slow moving ice
Surface Water
Water found below the Earth's surface.
Water Vapor
Water that is in the air as an invisible gas.
Water Cycle
The movement of water from earth's surface and back.
Landforms
The shapes on Earth's surface.
Continents
The seven large landmasses
Plate tectonics
Theory that suggest that earth's surface is divided inot a dozen or so slow moving plates, or pieces of Earth's surface.
Lava
The magma that reaches Earth's surface.
Earthquakes
Sudden violent movements of Earth's crust.
Weathering
The process that breaks rock down into smaller pieces.
Erosion
The movement of sediment from one location to another.